/* ============================================================
   NEON DEFENSE — Painted Game-Art UI
   ============================================================ */

:root {
  --cyan:    #00e5ff;
  --magenta: #ff2bd6;
  --violet:  #9d5cff;
  --amber:   #ffb547;
  --danger:  #ff3a55;
  --success: #3eff9b;
  --bg-0:    #03060d;
  --ink:     #d6f4ff;
  --ink-dim: #7da3bf;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%; height: 100%; overflow: hidden;
  background:
    radial-gradient(ellipse at center, rgba(8, 18, 32, 0.55) 0%, rgba(2, 5, 10, 0.95) 70%),
    url('../images/ui/panel_bg_tile.png');
  background-size: auto, 512px 512px;
  background-repeat: no-repeat, repeat;
  font-family: 'Rajdhani', 'Segoe UI', system-ui, sans-serif;
  color: var(--ink);
  user-select: none; -webkit-user-select: none;
  touch-action: none;
}

body { font-size: 14px; }

/* Ambient scanlines */
body::after {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 9999;
  background: repeating-linear-gradient(180deg,
    rgba(0, 229, 255, 0.022) 0 1px, transparent 1px 3px);
  mix-blend-mode: screen;
}

#game {
  position: relative;
  width: 100vw; height: 100vh;
  display: flex; justify-content: center; align-items: center;
  overflow: hidden;
}

#canvas {
  display: block;
  background: #050810;
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.35),
    0 0 0 6px rgba(3, 6, 13, 0.9),
    0 0 0 7px rgba(0, 229, 255, 0.18),
    0 0 80px rgba(0, 180, 230, 0.20);
  position: relative; z-index: 1;
  image-rendering: -webkit-optimize-contrast;
}

/* ============================================================
   TOP HUD — row of painted chips + buttons (no outer plate)
   ============================================================ */
#hud {
  position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; align-items: center;
  z-index: 10;
  padding: 0;
  max-width: 96vw;
  filter: drop-shadow(0 4px 14px rgba(0, 200, 255, 0.18));
}

.hud-chip {
  position: relative;
  z-index: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 12px 26px 12px 30px;
  min-width: 136px; min-height: 56px;
  background: none;
  font-family: 'Orbitron', monospace;
}
.hud-chip::before {
  content: '';
  position: absolute;
  inset: -10px -18px;
  z-index: -1;
  background: url('../images/ui/frame_chip.png') center / 100% 100% no-repeat;
  pointer-events: none;
}
.hud-chip[data-stat="wave"] {
  min-width: 172px;
  padding-right: 32px;
}
/* Hide the legacy CSS edge — painted frame has it baked in */
.hud-chip .chip-edge { display: none; }

.hud-chip img {
  width: 28px; height: 28px;
  filter: drop-shadow(0 0 6px currentColor);
}
.hud-chip .chip-label {
  font-size: 10px; letter-spacing: 0.20em;
  color: var(--ink-dim); font-weight: 600;
  text-transform: uppercase;
}
.hud-chip .chip-value {
  font-family: 'Orbitron', monospace;
  font-size: 22px; font-weight: 900; color: #fff;
  text-shadow: 0 0 10px currentColor;
  margin-left: auto;
  white-space: nowrap;
  transition: transform 0.18s cubic-bezier(0.2, 0.9, 0.4, 1.4);
}
.hud-chip .chip-value.tick { transform: scale(1.22); }

.hud-chip[data-stat="credits"] .chip-value,
.hud-chip[data-stat="credits"] img { color: var(--cyan); }
.hud-chip[data-stat="lives"] .chip-value,
.hud-chip[data-stat="lives"] img { color: var(--magenta); }
.hud-chip[data-stat="wave"] .chip-value,
.hud-chip[data-stat="wave"] img { color: var(--amber); }

/* Low-lives pulse */
.hud-chip.low { animation: lowPulse 0.85s ease-in-out infinite; }
@keyframes lowPulse {
  0%, 100% { filter: none; }
  50%      { filter: drop-shadow(0 0 14px rgba(255, 43, 214, 0.85)) brightness(1.15); }
}

/* HUD CONTROLS — small painted buttons */
.hud-controls {
  display: flex; gap: 8px;
  margin-left: 6px;
}
.ctl-btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  background: url('../images/ui/btn_primary.png') center / 100% 100% no-repeat;
  border: 0;
  padding: 0 22px;
  min-height: 56px; min-width: 76px;
  font-family: 'Orbitron', monospace;
  font-weight: 800; font-size: 14px; letter-spacing: 0.14em;
  color: #fff;
  cursor: pointer;
  transition: filter 0.12s, transform 0.08s;
  text-shadow: 0 0 8px var(--cyan), 0 1px 0 rgba(0, 0, 0, 0.6);
}
.ctl-btn span { position: relative; }
.ctl-btn:hover { filter: brightness(1.18) drop-shadow(0 0 10px var(--cyan)); }
.ctl-btn:active { transform: translateY(2px); }

.ctl-primary {
  background-image: url('../images/ui/btn_primary.png');
  filter: hue-rotate(-150deg) saturate(1.3);
  text-shadow: 0 0 8px var(--amber), 0 1px 0 rgba(0, 0, 0, 0.6);
  padding: 0 36px;
  min-width: 220px;
  letter-spacing: 0.18em;
  font-size: 13px;
}
.ctl-primary:hover { filter: hue-rotate(-150deg) saturate(1.3) brightness(1.18) drop-shadow(0 0 12px var(--amber)); }

/* ============================================================
   TOWER SHOP — painted cards
   ============================================================ */
#shop {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 8px;
  z-index: 10;
  padding: 4px;
}
.shop-header {
  font-family: 'Orbitron', monospace; font-weight: 800; font-size: 10px;
  letter-spacing: 0.34em; color: var(--cyan);
  text-align: center;
  padding: 6px 0;
  text-shadow: 0 0 8px var(--cyan);
}

.tower-card {
  position: relative;
  width: 110px; height: 160px;
  background: url('../images/ui/frame_card.png') center / 100% 100% no-repeat;
  cursor: pointer;
  display: flex; flex-direction: column; align-items: center;
  padding: 18px 10px 10px;
  transition: filter 0.12s, transform 0.08s;
}
/* Hide legacy edge */
.tower-card .card-edge { display: none; }

.tower-card .card-img {
  width: 70px; height: 70px;
  display: flex; align-items: center; justify-content: center;
  margin-top: 4px;
  position: relative;
}
.tower-card .card-img img {
  width: 64px; height: 64px;
  filter: drop-shadow(0 0 10px var(--tc, var(--cyan)));
  position: relative; z-index: 1;
}

.tower-card .tower-name {
  margin-top: auto;
  font-family: 'Orbitron', monospace; font-size: 11px; font-weight: 800;
  letter-spacing: 0.16em; color: #fff;
  text-shadow: 0 0 6px var(--tc, var(--cyan)), 0 1px 0 rgba(0,0,0,0.6);
  margin-bottom: 4px;
  padding-top: 8px;
}
.tower-card .tower-cost {
  font-family: 'Orbitron', monospace; font-size: 14px; font-weight: 900;
  color: var(--amber); text-shadow: 0 0 6px var(--amber), 0 1px 0 rgba(0,0,0,0.6);
  display: flex; align-items: baseline; gap: 2px;
}
.tower-card .tower-cost .c { color: var(--cyan); font-size: 11px; opacity: 0.9; }

.tower-card:hover { filter: brightness(1.12) drop-shadow(0 0 12px color-mix(in srgb, var(--tc, var(--cyan)) 65%, transparent)); }
.tower-card:active { transform: translateY(1px); }

/* Selected: swap to energized painted frame */
.tower-card.selected {
  background-image: url('../images/ui/frame_card_selected.png');
  filter: drop-shadow(0 0 18px color-mix(in srgb, var(--tc, var(--cyan)) 80%, transparent));
  animation: cardPulse 1.6s ease-in-out infinite;
}
@keyframes cardPulse {
  0%, 100% { filter: drop-shadow(0 0 14px color-mix(in srgb, var(--tc, var(--cyan)) 70%, transparent)); }
  50%      { filter: drop-shadow(0 0 22px color-mix(in srgb, var(--tc, var(--cyan)) 95%, transparent)) brightness(1.10); }
}

.tower-card.disabled { opacity: 0.45; filter: grayscale(0.55); cursor: not-allowed; }

/* ============================================================
   SELECTED-TOWER PANEL (painted frame)
   ============================================================ */
#tower-panel {
  position: absolute; left: 12px; bottom: 12px;
  min-width: 340px; max-width: 420px;
  padding: 46px 56px 40px;
  z-index: 10;
  background: url('../images/ui/frame_panel.png') center / 100% 100% no-repeat;
  filter: drop-shadow(0 0 20px rgba(0, 200, 255, 0.18));
}
#tower-panel .panel-edge { display: none; }

.panel-header {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 10px;
  padding: 0 4px;
}
.panel-tag {
  font-family: 'Orbitron', monospace; font-size: 9px; font-weight: 700;
  letter-spacing: 0.22em; color: var(--ink-dim);
  padding: 3px 7px;
  border: 1px solid rgba(0, 229, 255, 0.4);
  background: rgba(0, 0, 0, 0.4);
  flex: none;
}
#panel-name {
  flex: 1;
  font-family: 'Orbitron', monospace; font-weight: 900; font-size: 16px;
  letter-spacing: 0.16em; color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan), 0 1px 0 rgba(0,0,0,0.6);
  white-space: nowrap; overflow: hidden;
}
#panel-level {
  font-family: 'Orbitron', monospace; font-weight: 800; font-size: 10px;
  color: var(--amber); text-shadow: 0 0 6px var(--amber);
  padding: 3px 7px;
  border: 1px solid rgba(255, 181, 71, 0.5);
  background: rgba(40, 22, 8, 0.5);
  flex: none;
}

.panel-stats {
  display: flex; flex-direction: column; gap: 4px;
  margin-bottom: 12px;
}
.stat-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px 10px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.10), transparent);
  border-left: 2px solid var(--cyan);
}
.stat-k { font-family: 'Orbitron', monospace; font-size: 10px; letter-spacing: 0.18em; color: var(--ink-dim); font-weight: 600; }
.stat-v { font-family: 'Orbitron', monospace; font-size: 14px; font-weight: 800; color: #fff; text-shadow: 0 0 6px var(--cyan); }

.panel-buttons { display: flex; gap: 10px; }
.pn-btn {
  flex: 1;
  position: relative;
  min-height: 56px;
  padding: 0 8px;
  border: 0; cursor: pointer;
  background: url('../images/ui/btn_primary.png') center / 100% 100% no-repeat;
  font-family: 'Orbitron', monospace;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1px;
  color: #fff;
  transition: filter 0.12s, transform 0.08s;
}
.pn-btn .pn-lbl { font-weight: 800; font-size: 11px; letter-spacing: 0.18em; text-shadow: 0 0 8px var(--cyan), 0 1px 0 rgba(0,0,0,0.6); }
.pn-btn .pn-cost { font-weight: 800; font-size: 13px; color: var(--amber); text-shadow: 0 0 6px var(--amber), 0 1px 0 rgba(0,0,0,0.6); }
.pn-btn:hover:not(:disabled) { filter: brightness(1.18) drop-shadow(0 0 12px var(--cyan)); }
.pn-btn:active:not(:disabled) { transform: translateY(2px); }
.pn-btn:disabled { opacity: 0.35; cursor: not-allowed; filter: grayscale(0.6); }

.pn-sell {
  background-image: url('../images/ui/btn_danger.png');
  background-size: 138% 138%;
}
.pn-sell .pn-lbl { color: #fff; text-shadow: 0 0 8px var(--magenta), 0 1px 0 rgba(0,0,0,0.6); }
.pn-sell .pn-cost { color: #ffd5ee; text-shadow: 0 0 6px var(--magenta), 0 1px 0 rgba(0,0,0,0.6); }
.pn-sell:hover:not(:disabled) { filter: brightness(1.18) drop-shadow(0 0 12px var(--magenta)); }

/* ============================================================
   WAVE BANNER (painted slab)
   ============================================================ */
#wave-banner {
  position: absolute; left: 50%; top: 22%;
  transform: translate(-50%, -50%);
  width: min(640px, 88vw); min-height: 150px;
  display: flex; align-items: center; justify-content: center;
  z-index: 50; pointer-events: none;
  padding: 48px 100px;
  background: url('../images/ui/wave_banner.png') center / 100% 100% no-repeat;
  filter: drop-shadow(0 0 24px rgba(255, 181, 71, 0.6));
  animation: wbIn 0.35s cubic-bezier(0.2, 1, 0.4, 1.1) forwards,
             wbOut 0.45s ease-in 2.0s forwards;
}
@keyframes wbIn  { from { opacity: 0; transform: translate(-50%, -50%) scale(0.85) skewX(-6deg); }
                   to   { opacity: 1; transform: translate(-50%, -50%) scale(1) skewX(0); } }
@keyframes wbOut { to   { opacity: 0; transform: translate(-50%, -180%); } }

#wave-banner .wb-edge { display: none; }
#wave-banner .wb-inner {
  text-align: center;
  background: none;
  padding: 0; box-shadow: none;
}
#wave-banner .wb-inner::before { display: none; }
.wb-tag {
  display: block; font-family: 'Orbitron', monospace; font-size: 11px; font-weight: 800;
  letter-spacing: 0.42em; color: #fff;
  text-shadow: 0 0 10px var(--amber), 0 0 24px var(--amber), 0 1px 0 rgba(0,0,0,0.7);
  margin-bottom: 4px;
}
.wb-num {
  display: block; font-family: 'Orbitron', monospace; font-size: 30px; font-weight: 900;
  letter-spacing: 0.18em; color: #fff;
  text-shadow: 0 0 14px var(--amber), 0 0 32px var(--amber), 0 1px 0 rgba(0,0,0,0.7);
}
.wb-sub {
  display: block; font-family: 'Rajdhani', sans-serif; font-size: 11px; font-weight: 700;
  letter-spacing: 0.22em; color: #ffd28a;
  text-shadow: 0 0 6px var(--amber), 0 1px 0 rgba(0,0,0,0.7);
  margin-top: 2px;
}

/* ============================================================
   SCREENS — menu / pause / victory / game over
   ============================================================ */
.screen {
  position: absolute; inset: 0;
  display: flex; justify-content: center; align-items: center;
  z-index: 100;
  padding: 24px;
  text-align: center;
  animation: fadeIn 0.3s ease-out;
}
.screen.hidden, .hidden { display: none !important; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.screen::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: rgba(2, 5, 10, 0.55);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.screen::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(180deg,
    rgba(0, 229, 255, 0.03) 0 1px, transparent 1px 3px);
  mix-blend-mode: screen;
}

/* MENU — painted background image fills the whole scrim */
.menu-screen {
  background: url('../images/ui/menu_bg.png') center / cover no-repeat;
  flex-direction: column;
  gap: 30px;
}
.menu-screen::before {
  background: linear-gradient(180deg, rgba(2,5,10,0.45) 0%, rgba(2,5,10,0.7) 100%);
  backdrop-filter: none;
}

/* Painted-frame card used by menu / victory / gameover */
.screen-frame {
  position: relative;
  padding: 70px 90px 56px;
  max-width: 720px; width: 100%;
  background: url('../images/ui/frame_panel.png') center / 100% 100% no-repeat;
  filter: drop-shadow(0 0 28px rgba(0, 200, 255, 0.25));
}
.screen-frame.danger {
  filter: drop-shadow(0 0 28px rgba(255, 43, 214, 0.45));
}
.screen-frame.danger::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(255, 43, 214, 0.18), transparent 60%);
  mix-blend-mode: screen;
}

/* Painted corner brackets */
.frame-corner {
  position: absolute; width: 56px; height: 56px;
  background: url('../images/ui/corner_bracket.png') center / contain no-repeat;
  pointer-events: none;
  /* legacy border styles wiped */
  border: 0 !important;
  filter: drop-shadow(0 0 8px var(--cyan));
}
.frame-corner.tl { top: -10px;    left: -10px;    transform: rotate(0deg); }
.frame-corner.tr { top: -10px;    right: -10px;   transform: rotate(90deg); }
.frame-corner.br { bottom: -10px; right: -10px;   transform: rotate(180deg); }
.frame-corner.bl { bottom: -10px; left: -10px;    transform: rotate(270deg); }
.screen-frame.danger .frame-corner { filter: drop-shadow(0 0 8px var(--magenta)); }

/* MENU branding */
.brand { display: flex; flex-direction: column; align-items: center; }
.brand-tag {
  font-family: 'Orbitron', monospace; font-size: 11px; font-weight: 800;
  letter-spacing: 0.42em; color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan), 0 1px 0 rgba(0,0,0,0.6);
  margin-bottom: 14px;
  padding: 4px 16px;
  border: 1px solid rgba(0, 229, 255, 0.55);
  background: rgba(0, 8, 18, 0.6);
}
#logo {
  max-width: 320px; max-height: 220px;
  margin-bottom: 6px;
  filter: drop-shadow(0 0 24px rgba(0, 229, 255, 0.7)) drop-shadow(0 0 50px rgba(0, 229, 255, 0.3));
  animation: logoFloat 3.5s ease-in-out infinite;
}
@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.brand-title {
  font-family: 'Orbitron', monospace; font-weight: 900; font-size: 38px;
  letter-spacing: 0.32em; color: #fff;
  text-shadow:
    0 0 12px var(--cyan),
    0 0 28px var(--cyan),
    0 0 60px rgba(0, 229, 255, 0.5),
    0 1px 0 rgba(0,0,0,0.7);
  margin-top: 4px;
}
.brand-sub {
  font-family: 'Rajdhani', sans-serif; font-weight: 600; font-size: 13px;
  letter-spacing: 0.4em; color: var(--ink-dim);
  margin-top: 6px;
  text-transform: uppercase;
}

.hint {
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px; font-weight: 500;
  color: var(--ink-dim); opacity: 0.95;
  max-width: 500px; margin: 8px auto 0;
  line-height: 1.6; letter-spacing: 0.04em;
  text-shadow: 0 1px 0 rgba(0,0,0,0.85);
}

.frame-readout {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  margin-top: -6px;
  font-family: 'Orbitron', monospace; font-size: 9px; font-weight: 800;
  letter-spacing: 0.28em; color: var(--success);
  text-shadow: 0 0 6px var(--success), 0 1px 0 rgba(0,0,0,0.7);
}
.frame-readout .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--success); box-shadow: 0 0 8px var(--success);
  animation: blink 1.2s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }

/* END SCREENS */
.end-screen .end-tag {
  display: inline-block;
  font-family: 'Orbitron', monospace; font-size: 12px; font-weight: 800;
  letter-spacing: 0.42em;
  padding: 6px 18px; margin-bottom: 18px;
  border: 1px solid currentColor;
  background: rgba(0, 0, 0, 0.4);
}
.cyan-tag    { color: var(--cyan);    text-shadow: 0 0 8px var(--cyan); }
.magenta-tag { color: var(--magenta); text-shadow: 0 0 8px var(--magenta); }

.glow-h1 {
  font-family: 'Orbitron', monospace; font-weight: 900;
  font-size: 84px; letter-spacing: 0.2em;
  margin-bottom: 18px;
  line-height: 1;
}
.cyan    { color: var(--cyan);    text-shadow: 0 0 24px var(--cyan), 0 0 48px var(--cyan), 0 0 80px rgba(0, 229, 255, 0.6), 0 2px 0 rgba(0,0,0,0.7); }
.magenta { color: var(--magenta); text-shadow: 0 0 24px var(--magenta), 0 0 48px var(--magenta), 0 0 80px rgba(255, 43, 214, 0.6), 0 2px 0 rgba(0,0,0,0.7); }

.end-sub {
  font-family: 'Rajdhani', sans-serif; font-weight: 600; font-size: 15px;
  color: var(--ink); letter-spacing: 0.16em;
  margin-bottom: 26px;
  text-transform: uppercase;
  text-shadow: 0 1px 0 rgba(0,0,0,0.7);
}

/* PAUSE OVERLAY uses same painted card */
.pause-screen { background: rgba(2, 5, 10, 0.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.pause-card {
  position: relative;
  padding: 60px 110px;
  background: url('../images/ui/frame_panel.png') center / 100% 100% no-repeat;
  filter: drop-shadow(0 0 24px rgba(0, 200, 255, 0.25));
  text-align: center;
  min-width: 480px;
  max-width: 640px;
}
.pause-tag {
  font-family: 'Orbitron', monospace; font-size: 11px; font-weight: 800;
  letter-spacing: 0.42em; color: var(--ink-dim);
  margin-bottom: 6px;
  text-shadow: 0 1px 0 rgba(0,0,0,0.7);
}
.pause-title {
  font-family: 'Orbitron', monospace; font-weight: 900; font-size: 48px;
  letter-spacing: 0.22em; color: var(--cyan);
  text-shadow: 0 0 18px var(--cyan), 0 0 40px var(--cyan), 0 2px 0 rgba(0,0,0,0.7);
  margin-bottom: 8px;
}
.pause-sub {
  font-family: 'Rajdhani', sans-serif; color: var(--ink);
  font-size: 13px; letter-spacing: 0.12em;
  text-transform: uppercase; margin-bottom: 24px;
  text-shadow: 0 1px 0 rgba(0,0,0,0.7);
}

/* ============================================================
   SETTINGS OVERLAY (painted card, sliders)
   ============================================================ */
.settings-screen { background: rgba(2, 5, 10, 0.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.settings-card {
  position: relative;
  padding: 56px 90px 44px;
  background: url('../images/ui/frame_panel.png') center / 100% 100% no-repeat;
  filter: drop-shadow(0 0 24px rgba(0, 200, 255, 0.25));
  text-align: center;
  min-width: 480px;
  max-width: 640px;
}
.settings-tag {
  font-family: 'Orbitron', monospace; font-size: 11px; font-weight: 800;
  letter-spacing: 0.42em; color: var(--ink-dim);
  margin-bottom: 6px;
  text-shadow: 0 1px 0 rgba(0,0,0,0.7);
}
.settings-title {
  font-family: 'Orbitron', monospace; font-weight: 900; font-size: 40px;
  letter-spacing: 0.22em; color: var(--cyan);
  text-shadow: 0 0 18px var(--cyan), 0 0 40px var(--cyan), 0 2px 0 rgba(0,0,0,0.7);
  margin-bottom: 22px;
}
.settings-row {
  display: flex; align-items: center; gap: 14px;
  margin: 14px 0;
  padding: 10px 14px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.10), transparent);
  border-left: 2px solid var(--cyan);
}
.settings-k {
  font-family: 'Orbitron', monospace; font-size: 11px; font-weight: 800;
  letter-spacing: 0.22em; color: var(--ink-dim);
  width: 60px; text-align: left; flex: none;
}
.settings-v {
  font-family: 'Orbitron', monospace; font-size: 13px; font-weight: 800;
  color: var(--amber); text-shadow: 0 0 6px var(--amber), 0 1px 0 rgba(0,0,0,0.6);
  width: 50px; text-align: right; flex: none;
}
.settings-slider {
  flex: 1;
  -webkit-appearance: none; appearance: none;
  height: 8px; border-radius: 4px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(0, 229, 255, 0.18) 100%);
  outline: none;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.55), 0 0 8px rgba(0, 229, 255, 0.25);
  cursor: pointer;
}
.settings-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff 0%, var(--cyan) 60%, #006a82 100%);
  border: 1px solid rgba(0, 229, 255, 0.85);
  box-shadow: 0 0 10px var(--cyan), 0 0 20px rgba(0, 229, 255, 0.4);
  cursor: pointer;
}
.settings-slider::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff 0%, var(--cyan) 60%, #006a82 100%);
  border: 1px solid rgba(0, 229, 255, 0.85);
  box-shadow: 0 0 10px var(--cyan), 0 0 20px rgba(0, 229, 255, 0.4);
  cursor: pointer;
}
#btn-settings span { font-size: 22px; line-height: 1; }

/* ============================================================
   BIG BUTTON (painted plate)
   ============================================================ */
.big-btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 56px;
  min-height: 70px; min-width: 240px;
  border: 0; cursor: pointer;
  background: url('../images/ui/btn_primary.png') center / 100% 100% no-repeat;
  color: #fff;
  font-family: 'Orbitron', monospace; font-weight: 900;
  font-size: 18px; letter-spacing: 0.32em;
  text-shadow: 0 0 10px var(--cyan), 0 0 22px rgba(0, 229, 255, 0.5), 0 2px 0 rgba(0,0,0,0.7);
  transition: filter 0.15s, transform 0.08s;
  margin: 8px 4px;
}
.big-btn .bb-lbl { position: relative; z-index: 1; }
.big-btn:hover { filter: brightness(1.20) drop-shadow(0 0 18px var(--cyan)); }
.big-btn:active { transform: translateY(2px); }

.danger-btn {
  background-image: url('../images/ui/btn_danger.png');
  background-size: 138% 138%;
  text-shadow: 0 0 10px var(--magenta), 0 0 22px rgba(255, 43, 214, 0.5), 0 2px 0 rgba(0,0,0,0.7);
}
.danger-btn:hover { filter: brightness(1.20) drop-shadow(0 0 18px var(--magenta)); }

/* ============================================================
   MOBILE / PORTRAIT
   ============================================================ */
@media (max-width: 820px), (max-aspect-ratio: 5/4) {
  #hud {
    top: 8px;
    gap: 8px; padding: 14px 30px;
    min-width: 0;
    flex-wrap: wrap; justify-content: center;
    max-width: calc(100vw - 16px);
  }
  .hud-chip { padding: 10px 14px 10px 18px; min-width: 110px; min-height: 48px; gap: 6px; }
  .hud-chip::before { inset: -8px -12px; }
  .hud-chip img { width: 22px; height: 22px; }
  .hud-chip .chip-label { font-size: 9px; }
  .hud-chip .chip-value { font-size: 17px; }
  .hud-controls {
    margin-left: 0; padding-top: 4px;
    width: 100%; justify-content: center;
  }
  .ctl-btn { min-height: 52px; padding: 0 14px; font-size: 12px; min-width: 60px; }
  .ctl-primary { padding: 0 18px; min-width: 150px; font-size: 12px; }

  /* Shop becomes bottom dock */
  #shop {
    flex-direction: row; right: auto; left: 50%; top: auto; bottom: 8px;
    transform: translateX(-50%);
    flex-wrap: nowrap;
    max-width: calc(100vw - 16px);
    padding: 6px;
    gap: 6px;
    align-items: stretch;
    justify-content: center;
  }
  .shop-header { display: none; }
  .tower-card {
    width: 78px; height: 116px; padding: 14px 6px 6px;
  }
  .tower-card .card-img { width: 50px; height: 50px; margin-top: 0; }
  .tower-card .card-img img { width: 46px; height: 46px; }
  .tower-card .tower-name { font-size: 9px; letter-spacing: 0.10em; }
  .tower-card .tower-cost { font-size: 12px; }

  /* Tower panel: cap width so the painted bevel doesn't skew at extreme aspects */
  #tower-panel {
    left: 50%; right: auto; bottom: 130px;
    transform: translateX(-50%);
    min-width: 0; max-width: 440px;
    width: calc(100vw - 16px);
    padding: 42px 48px 34px;
  }
  #panel-name { font-size: 15px; }
  .panel-buttons { gap: 8px; }
  .pn-btn { min-height: 52px; padding: 0 6px; }
  .pn-btn .pn-lbl { font-size: 10px; }

  /* Wave banner */
  #wave-banner {
    width: min(440px, 92vw); top: 18%;
    padding: 38px 80px;
    min-height: 130px;
  }
  .wb-num { font-size: 22px; letter-spacing: 0.14em; }
  .wb-tag { font-size: 9px; letter-spacing: 0.32em; }
  .wb-sub { font-size: 10px; letter-spacing: 0.14em; }

  /* Screens */
  .screen-frame { padding: 60px 70px 50px; max-width: 92vw; }
  .pause-card { padding: 48px 80px; min-width: 0; max-width: 92vw; }
  .settings-card { padding: 44px 56px 36px; min-width: 0; max-width: 94vw; width: 94vw; }
  .settings-title { font-size: 28px; letter-spacing: 0.16em; margin-bottom: 14px; }
  .settings-row { gap: 10px; padding: 8px 10px; margin: 10px 0; }
  .settings-k { width: 48px; font-size: 10px; letter-spacing: 0.16em; }
  .settings-v { width: 42px; font-size: 12px; }
  .frame-corner { width: 40px; height: 40px; top: -8px; left: -8px; }
  .frame-corner.tr { right: -8px; left: auto; }
  .frame-corner.bl { bottom: -8px; left: -8px; top: auto; }
  .frame-corner.br { bottom: -8px; right: -8px; top: auto; left: auto; }
  .brand-title { font-size: 26px; letter-spacing: 0.20em; }
  .brand-sub { font-size: 11px; letter-spacing: 0.24em; }
  #logo { max-width: 220px; max-height: 150px; }
  .glow-h1 { font-size: 48px; letter-spacing: 0.16em; }
  .pause-title { font-size: 36px; letter-spacing: 0.16em; }
  .pause-sub { font-size: 12px; letter-spacing: 0.10em; }
  .end-sub { font-size: 13px; letter-spacing: 0.10em; }
  .big-btn {
    padding: 0 36px; min-height: 60px; min-width: 220px;
    font-size: 14px; letter-spacing: 0.22em;
  }
  .frame-readout { gap: 6px; font-size: 8px; letter-spacing: 0.18em; flex-wrap: wrap; margin-top: 2px; max-width: 360px; }
  .hint { font-size: 12px; max-width: 320px; margin-top: 14px; }
}

@media (max-width: 480px) {
  .tower-card { width: 64px; height: 104px; padding: 10px 4px 8px; }
  .tower-card .card-img { width: 40px; height: 40px; }
  .tower-card .card-img img { width: 36px; height: 36px; }
  .tower-card .tower-name { font-size: 8px; letter-spacing: 0.08em; }
  .tower-card .tower-cost { font-size: 11px; }
  .ctl-btn { padding: 0 10px; font-size: 11px; min-width: 50px; min-height: 48px; }
  .ctl-primary { padding: 0 14px; min-width: 130px; }
  .hud-chip { padding: 8px 10px 8px 14px; min-width: 92px; min-height: 44px; }
  .hud-chip::before { inset: -7px -10px; }
  .hud-chip .chip-value { font-size: 15px; }

  .screen-frame { padding: 46px 50px 36px; }
  .glow-h1 { font-size: 38px; letter-spacing: 0.12em; }
  .brand-title { font-size: 22px; letter-spacing: 0.14em; }
  .brand-tag { font-size: 9px; letter-spacing: 0.26em; padding: 3px 10px; }
  .pause-title { font-size: 28px; letter-spacing: 0.14em; }
  .pause-card { padding: 44px 50px 36px; max-width: 94vw; }
  .end-screen .end-tag { font-size: 9px; letter-spacing: 0.26em; padding: 4px 12px; }
  .big-btn { padding: 0 28px; min-height: 52px; min-width: 200px; font-size: 12px; letter-spacing: 0.18em; }
  .end-sub, .pause-sub { font-size: 11px; letter-spacing: 0.08em; }
  .frame-readout { font-size: 8px; letter-spacing: 0.14em; }
  #logo { max-width: 160px; max-height: 110px; }
  #wave-banner { width: min(360px, 94vw); padding: 22px 50px; min-height: 90px; }
  .wb-num { font-size: 18px; }
  .frame-corner { width: 32px; height: 32px; }
}